Best Bully Sticks All-Natural Himalayan Yak Cheese Dog Chews (3 Pack) Vegetarian Dog Chew: Meat Free Option for Dogs Lactose Free: This chew contains milk but the lactose has been removed. All Natural: No Hormones, Additives, or unhealthy Chemicals Suitable for All Size Dogs Perfect for Indoors: Himalayan Yak Cheese Dog Chews are virtually Odor Free.